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Staff

Sebastien N. Dryepondt

Research Staff
Corrosion Science & Technology Group
Materials Science & Technology Division
Oak Ridge National Laboratory
P.O. Box 2008
Oak Ridge, TN 37831-6156
Phone: (865) 574-4452
email: dryepondtsn@ornl.gov

 

Education:

  • Ph.D. Materials Science, Institut National Polytechnique de Toulouse (France)
  • B.S., Materials Science and Engineering, Ecole Nationale Superieure de Mecanique et d Aerotechnique (France)

Current Research:

  • Development and characterization of a new commercial oxide dispersion strengthened (ODS) alloy for high temperature applications: microstructure, oxidation resistance, mechanical properties, joining and lifetime modeling
  • Determination of the interaction between high temperature corrosion in aggressive environments and mechanical deformation.
  • Development of new coatings for fossil and automotive applications: improvement of the oxidation resistance and assessment of the coating impact on the substrate mechanical properties.
  • Characterization of the oxidation behavior of advanced creep-resistant austenitic steels (CF8C+)

Previous Research:

  • Determination of the mechanical and oxidation behaviors of high temperature alloys and coatings for gas turbine applications.
  • Characterization of the oxide scale formation on Fe(Al) and FeCrAl alloys and modelization of the impact of the alumina scale on the substrate mechanical properties.
  • Development a 60 kW commercial (Capstone) microturbine used as a test facility for the next generation of heat exchanger materials and determination of the mechanical and chemical degradation mechanisms due to the exhaust gas exposure.
  • Determination of in-service degradation mechanisms of coated and uncoated turbine blades for helicopter engines: design of a new mechanical testing apparatus, analysis of fracture modes, and integration of oxidation effect and coating application into lifetime models.